We recently found out we're expecting our first kid and my wife has hit the stage in the pregnancy where her underwear is no longer fitting. She wears a medium and I wear a large. Instead of buying all new, she asked if she could borrow some of mine. I told her I had thought of that as an option too but didn't want to bring it up and told her she was welcome to help herself to whatever she wanted to wear. I think today was the first day that she did.